Blinking signal, sound - JBL PB10 Subwoofer

Sounds like an indication of a burnt out bulb. Check the front bulbs

look in the fuse box location, follow the diagram for the signal relay or
you can turn on the signal to hear the clicking sounds to locate it

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sounds like the turn signal switch in faulty.
i found some great info that explains the switch and its functions.


Self Canceling Signals How Turn Signals Work

(page 4)
Cheers!

Here is what the service manual says. Looks like it is not a flasher relay but a function of the body control module.

TURN SIGNAL AND HAZARD WARNING LAMP SYSTEMSystem Description OUTLINE Turn signal lamp and the hazard warning lamp is controlled by combination switch reading function and the flasher control function of BCM.
TURN SIGNAL LAMP OPERATION - BCM detects the combination switch condition by the combination switch reading function. - BCM supplies voltage to the right (left) turn signal lamp circuit when the ignition switch is turned ON and the turn signal switch is in the right (left) position. BCM blinks the turn signal lamp.
HAZARD WARNING LAMP OPERATION BCM supplies voltage to both turn signal lamp circuit when the hazard switch is turned ON. BCM blinks the hazard warning lamp.
TURN SIGNAL INDICATOR LAMP AND TURN SIGNAL SOUND OPERATION - BCM transmits the turn indicator signal to the combination meter with CAN communication while the turn signal lamp and the hazard warning lamp are operating. - Combination meter outputs the turn signal sound with the integrated buzzer while blinking the turn signal indicator lamp according to the turn indicator signal.
HIGH FLASHER OPERATION (FAIL-SAFE) - BCM detects the turn signal lamp circuit status by the terminal current value. - BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal lamp operating. NOTE: The blinking speed is normal while operating the hazard warning lamp.

sounds like a relay problem easy to replace

If the left signal light is affected as well then the flasher can is faulty.
The flasher can is located under the dash.

this sounds like a earthing problem , so check the wiring for the head lights, see if any wires are trapped between something, bare wire touching car body , anythingthat doesn't look correct, could also be the indicator lever itself with a problem , but check the headlight wiring first

our relay is going out.

it sounds like you have a bulb out some where thats why it blinks fast.

sounds like the turn signal cam could be worn im sure you headlights and turn signals are on the same knob by the sounds of it